In PWRs - a different LWR system - control rods are withdrawn from the core, and the control is acheived with soluble B-10 in the coolant (which is buffered with LiOH) to maintain a pH above 6.9 or perhaps closer to 7.1 - 7.4 for purposes of minimizing the accumulation of crud (metal corrosion products) on the fuel.
Rhetorical patterns have an additional function of helping writers to organize information in ways their readers can understand easily (425). Another term for these patterns is topoi (commonplaces). Many of these topoi are useful in numerous situations.
By Richard Nordquist. Definition: A rhetorical term for the repetition of words or phrases at both the beginning and end of successive clauses or verses: a combination of anaphora and epiphora (or epistrophe). See Examples and Observations, below. Also see: 1  Effective Rhetorical Strategies of Repetition. 2  Epimone. 3  Gradatio. 4  Top 20 Figures of Speech.